Gravitational redshift experiments with the high-resolution Mössbauer resonance in67Zn

Potzel, W.; Schafer, C. F.; Steiner, Markus J.; Karzel, Helmut; Schiessl, W.; Peter, M.; Kalvius, G. M.; Katila, T.; Ikonen, Erkki; Helistö, Panu; Hietaniemi, J.; Riski, K.

doi:10.1007/bf02398865

Cited by 26 publications

(10 citation statements)

References 30 publications

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“…Among them, we just briefly mention a few. They are gravitational red shift experiments [1][2][3][4][5][6][7], novel tests of the general relativity theory [8,9], detection of fast and tiny sample displacements induced by pulsed-laser heating [10], time differential nuclear resonance spectroscopy of geophysically important materials containing iron under extremely high static pressure and pulsed laser heating, which simulate physical and chemical processes in deep planetary interiors [11]. A rapidly developing field of science, which is known as γ-ray (or hard x-ray) quantum optics based on Mössbauer effect, provides unambiguous test of many concepts and ideas of coherent quantum optics with γ-photons resonantly interacting with ensemble of nuclei.…”

Section: Introductionmentioning

confidence: 99%

Application of the Mössbauer effect to the study of subnanometer harmonic displacements in thin solids

Shakhmuratov

Vagizov

2017

Phys. Rev. B

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We measure subnanometer displacements of thin samples vibrated by piezotransducer. Samples contain 57 Fe nuclei, which are exposed to 14.4 keV γ-radiation. Vibration produces sidebands from a single absorption line of the sample. The sideband intensities depend on the vibration amplitude and its distribution along the sample. We developed a model of this distribution, which adequately describes the spectra of powder and stainless steel (SS) absorbers. We propose to filter γ-radiation through a small round hole in the lead mask, placed before the absorber. In this case only a small spot of the vibrated absorber is observed. We found for SS foil that nuclei, exposed to γ-radiation in this small spot, vibrate with almost the same amplitudes whose difference does not exceed a few picometers within the irradiated area.

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Section: Introductionmentioning

confidence: 99%

Application of the Mössbauer effect to the study of subnanometer harmonic displacements in thin solids

Shakhmuratov

Vagizov

2017

Phys. Rev. B

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“…Therefore, also more advanced setups, e.g., involving multiple magnetic hyperfine states with selectively coupled resonances, can be addressed [15,16]. On the other hand, the nuclear resonances are of primary significance in precision spectroscopy and metrology at x-ray frequencies due to their narrow linewidth [36,37]. Using our approach, tiny phase changes can be extracted from the measured data with high precision, assisted by the discovery of the mechanism behind the asymmetric line shapes.…”

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confidence: 99%

Interferometric phase detection at x-ray energies via Fano resonance control

et al. 2015

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Modern x-ray light sources promise access to structure and dynamics of matter in largely unexplored spectral regions. However, the desired information is encoded in the light intensity and phase, whereas detectors register only the intensity. This phase problem is ubiquitous in crystallography and imaging and impedes the exploration of quantum effects at x-ray energies. Here, we demonstrate phase-sensitive measurements characterizing the quantum state of a nuclear two-level system at hard x-ray energies. The nuclei are initially prepared in a superposition state. Subsequently, the relative phase of this superposition is interferometrically reconstructed from the emitted x rays. Our results form a first step towards x-ray quantum state tomography and provide new avenues for structure determination and precision metrology via x-ray Fano interference.

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“…In two recent contributions [6] it has been argued that such a narrow line can indeed be achieved experimentally. We strongly disagree with these claims and want to stress that basically two types of line broadening are important [12], [13], [14], [5].…”

Section: Linewidthmentioning

confidence: 96%

Recoilless resonant emission and detection of electron antineutrinos

Potzel

2008

J. Phys.: Conf. Ser.

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Recoilless resonant capture of monoenergetic electron antineutrinos (Mössbauer antineutrinos) emitted in bound-state β -decay in the system 3 H -3 He is discussed. The recoilfree fraction including a possible phonon excitation due to local lattice expansion and contraction at the time of the nuclear transition, homogeneous and inhomogeneous line broadening, and the relativistic second-order Doppler effect are considered. It is demonstrated that homogeneous line broadening is essential due to stochastic magnetic relaxation processes in a metallic lattice. Inhomogeneous line broadening plays an equally important role. An essential issue which has been overlooked up to now, is an energy shift of the resonance line due to the direct influence of the binding energies of the 3 H and 3 He atoms in the lattice on the energy of the electron antineutrinos. This energy shift as well as the second-order Doppler shift exhibit variations in a non-perfect (inhomogeneous) lattice and may seriously jeopardize the observation of Mössbauer antineutrinos. If successful in spite of these enormous difficulties, Mössbauer antineutrino experiments could be used to gain new and deep insights into the nature of neutrino oscillations, determine the neutrino mass hierarchy as well as up to now unknown oscillation parameters, search for sterile neutrinos, and measure the gravitational redshift of electron antineutrinos in the field of the Earth.

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Gravitational redshift experiments with the high-resolution Mössbauer resonance in67Zn

Cited by 26 publications

References 30 publications

Application of the Mössbauer effect to the study of subnanometer harmonic displacements in thin solids

Application of the Mössbauer effect to the study of subnanometer harmonic displacements in thin solids

Interferometric phase detection at x-ray energies via Fano resonance control

Recoilless resonant emission and detection of electron antineutrinos

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